Low Spin Golf Ball

ABSTRACT

The invention discloses is a method of manufacturing a golf ball that reduces the chances of a hook or slice by canceling out the horizontal force of the golf club&#39;s impact. The golf ball has a shell layer, a core layer, and at least two inner balls symmetrically disposed between the ball shell layer and the core layer. The golf ball takes the USGA (United States Golf Association)&#39;s regulations into consideration.

FIELD OF THE INVENTION

The present invention relates to the technical fields of golf balls, and more particularly to a low spin golf ball.

BACKGROUND OF THE INVENTION

In general, golf balls are primarily divided into high spin golf balls and low spin golf balls, and the high spin golf balls with a high spin rate provide a longer distance for a swing, and the low spin golf balls with a controlled/low spin rate give a better control over the golf balls due to a smaller chance of having a slice and/or a hook. The low spin golf balls usually come with a design that reduces a spin produced by a horizontal attribute of a golfer's swing and allow an outer shell of the golf ball to spin independently with respect to the core of the golf ball, and thus blocking the passage of the horizontal force to the core of the golf ball and resulting in a significant reduction of spin, and this result can be achieved by applying a lubricant between layers of the golf ball to allow an outer layer to damp or “absorb” the horizontal force as disclosed in U.S. Pat. No. 5,827,133. There are several things that can be done to improve the aforementioned patent. For example, the service life of a lubrication oil (one of the chemical compounds contained in the lubricant) may be shortened by temperature, oxidation, and contamination, and golf is usually played in hot weather, and the power of constant impacts may give rise to a high temperature inside the golf ball, and thus the oil may be deteriorated and its service life may be shortened by the high temperature. There is also a risk of contamination, especially when the golfer is hitting the golf ball into mud and dirt. If any of the aforementioned flaws occurs, the golf ball will act strangely, since the elastic material of the golf ball is hardened, and the lubrication oil is dried. These flaws are caused by the use of a chemical structure. If a physical structure were adopted instead, the risk of failure will be reduced significantly. Obviously, it is better to use physical structures instead of chemical compounds.

SUMMARY OF THE INVENTION

The present invention is directed to a golf ball manufactured by a method in compliance with the regulations set forth by the United States Golf Association (USGA) and capable of lowering the chance and severity of a golf ball to slice or hook when it is impacted. The present invention achieves the effect of blocking most of the horizontal forces that reach the core of the ball by a method without using any chemical compound.

Therefore, it is a primary objective of the present invention to provide a golf ball with a reduced spin in the trajectory of the golf ball.

To achieve the aforementioned and other objectives, the present invention discloses a low spin golf ball comprising a ball shell, a core layer, and at least two inner balls, symmetrically disposed between the ball shell layer and the core layer, and the whole golf ball is symmetrical with respect to its center.

The inner balls are essentially made of steel or copper, and these materials ensure the stability factor of the ball, and have the feature of a low friction with smooth surfaces, and this feature allows the golf ball to spin better.

The number of inner metal balls is determined by the weight to stability factor. The number of inner metal balls is preferably an even number greater than eight in order to maintain the required symmetricity. The size of the inner balls is related to the weight of the inner metal balls, which should be less than 0.05% of the total weight of the golf ball. A smaller size means a lesser weight, but a bigger size means a better durability, so that the balance between the size and the required function should be found. In practices, the inner metal ball is approximately equal to 0.3 mm to 1 mm, because the metal ball is a sphere, and its size determines the length from the core layer to the ball shell.

The golf ball further comprises a plurality of dents at the core layer and provided for maintaining the balls to stay in position without losing the symmetricity. One problem is that if the metal balls are moved out of position by impacts, these balls will not be allowed in an official game due to its asymmetrical structure. In order to solve this problem, a socket is provided to cover about ⅓ of the metal ball, while the outer shell is a smooth surface. This solution allows the ball shell to move and rotate, while keeping the metal balls to stay in position relative to the core of the golf ball. If we have dimple-like shaped members in the middle of the outer ball shell and the inner core layer, wherein one sticks out, and the other sticks in. In other words, the fully constructed ball should be solid. Because of the slight deformation produced by impacting the outer layer can spin the ball a little and locking the ball into another position. By using the same concept of the previous invention, the spin rate will also be reduced. This arrangement can meet the symmetricity requirement of standard golf rules

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a structural body of the invention

FIG. 2 shows how the forces work when strikes by a golf club

FIG. 3 is a different embodiment of the original invention of a golf ball using rigid edges instead of metal balls

FIG. 4 is a further enhancement of the original intention

DESCRIPTION OF THE PREFERRED EMBODIMENTS

To fully comprehend the objective, feature and function of the present invention, a detailed description of the present invention is presented by the following exemplary embodiments together with the accompanying figures.

With reference to FIG. 1 for the use of metal balls in accordance with the present invention, this invention adopts the same concept of bearings, and creates a spherical bearing 01, so that there will be no limitation on how the ball spins, and the outer shell 03 is allowed to rotate independently with respect to the core 02. In general, this arrangement only allows perpendicular forces (relative to the tangent line of the core) to reach the core. A commercially available ball has a minimum bearing size of 0.5 mm, and a weight of 0.00052 ounce each, which is approximately equal to 0.03% of the total weight of a standard golf ball. In other words, weight is not a concern of this design.

With reference to FIG. 2 for a bird's eye view of a golf club striking a golf ball with an inside-out swing, the striking force is perpendicular to the club 06, which is the force in a direction where the golf ball would travel without the design of this invention 10. The striking force perpendicular to the club 06 is divided into two components, one passing through the center or core of the golf ball 07, while the other being an excess force of the “core force” 04. With the design of the present invention, the excess force will cause the outer ball shell to spin in the counterclockwise direction 09 and the golf ball to travel more straightly than a normal golf ball. The difference between the trajectories 08 and 10 of the aforementioned two conditions is shown.

With reference to FIG. 3 for an embodiment of the original golf ball, it is another way to ensure that the horizontal force is eliminated or “wasted” by the momentum/torque of the strike, and the rotation of the outer ball shell allows the golf ball to slide into an another slit. Such absolute symmetry compromises less than the original golf ball.

With reference to FIG. 4 for a modification of the original design, the ball movement is restricted, so that this invention can further ensure the symmetricity of the inner metal balls.

Most conventional golf balls such as the Top Flite Strata™ golf balls have multiple layers preinstalled therein. In this embodiment of the invention, the outer ball shell 03 encompasses the core 02. The inner metal balls are inserted before the outer ball shell 03 is molded, and the mold of the outer layer is applied after the inner metal balls are inserted and secured. During the process, a lubricant is added to the inside of the outer layer 03, and the outside of the core 02 is lubricated to allow the inner metal balls to slide a lot better.

In summation of the description above, the low spin golf ball of the present invention has the effect of blocking most of the horizontal forces reaching the core of the ball by different ways without using any chemical compound.

Although the embodiments of the present invention are disclosed as above, these embodiments shall not be considered to restrict the present invention. Those modifications that persons having ordinary skill in the art may make to the shape, structure, feature, method and/or quantity according to the claims of the present invention shall be covered by the scope of the present invention and the protected scope of the present invention shall be considered by the claims attached to this specification. 

1. A low spin golf ball, comprising: An outer shell; a core; and at least two spherical bearings, symmetrically arranged between the outer shell and the core; wherein, the spherical bearings impose no limitation on how the ball spins, and the outer shell is allowed to rotate independently with respect to the core, and only perpendicular forces are allowed to reach the core.
 2. The low spin golf ball of claim 1, wherein the spherical bearings are essentially made of steel or copper.
 3. The low spin golf ball of claim 1, wherein the number of spherical bearings is determined by a weight to stability factor, and the number of spherical bearings is preferably at least 8, and the total weight of all spherical bearings is less than 0.5% of the total weight of the golf ball.
 4. The low spin golf ball of claim 1, wherein the spherical bearings have a total weight below 0.5% of the total weight of the golf ball.
 5. The low spin golf ball of claim 1, further comprising a plurality of dents formed on the core layer for keeping the spherical bearings fixed in position without loss of symmetry.
 6. The low spin golf ball of claim 1, wherein the golf ball is manufactured by a method in compliance with the regulations set forth by the United States Golf Association (USGA) and capable of reducing the chance and severity of the golf ball to slice or hook when the golf ball is impacted. 7-8. (canceled) 